#include "artclass.h"
#include <bits/stdc++.h>
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
int sum=0,hw=0;
for (int i=0; i<H; i++) {
for (int j=0; j<W-1; j++) {
sum += abs(R[i][j]-R[i][j+1]);
sum += abs(G[i][j]-G[i][j+1]);
sum += abs(B[i][j]-B[i][j+1]);
hw++;
}
}
for (int j=0; j<W; j++) {
for (int i=0; i<H-1; i++) {
sum += abs(R[i][j]-R[i+1][j]);
sum += abs(G[i][j]-G[i+1][j]);
sum += abs(B[i][j]-B[i+1][j]);
hw ++;
}
}
sum=sum/hw;
if(sum < 10) return 4;
if(sum < 27) return 1;
if(sum < 55) return 2;
return 3;
}
